Unpacked home and amazed. Once over the attenuation, the headphone is closed, not everyone likes. I do not like it, my roommates. The sound is clear, differentiated, good space. Bass not exaggerated but powerful and defined. I hear with the headphones clearly differences between FLAC and MP3 files. So Sonically there is nothing wrong.
Handling. Awesome from the idea. For the M1 is really just a very good headphone with a stub cable. If you put an extension cord at home because you have a pair of headphones.
Move then the included microphone cable comes into play because of the coupling, the cable is plugged in, not only to the headphones, no, because the microphone's inside and the switch for the control of the smartphone. Personally, I would have been better, the headphones have a jack and the micro would plug in, but so it goes.
And it germinates the question of why you do not always puts headphones or headsets like this, the best yet with an adapter for the PC connection.